• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2011년도 추계학술대회
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• pp.78-79
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• 2011

해양관광 수요가 지속적으로 증가할 것이 예상됨에 따라, 수요에 적극적으로 대응하고 고객요구에 최적화 및 차별화된 수요자 기반 컨텐츠 개발과 공급을 조정 통합하는 주체의 필요성이 높아지고 있다. 스마트폰과 인터넷으로 대표되는 SNS를 기반으로 고객의 정보를 수집하고, 고객이 요구하는 차별화된 컨텐츠를 공급함으로서 비용 및 만족도 모두를 충족시킬 수 있는 토털 해양관광 Platform 구축이 필요한 실정이다. 경영전문 토털 해양관광 "Platform Company" 설립을 통하여 부산에 산재하고 있는 다양하고 특색있는 어촌 해양 부존자원 활용의 극대화, 해양관광 고객수요 창조, 어촌경제의 안정적 고수익 기반마련과 고용창출 등 지역경제 활성화에 기여하고자 한다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1996년도 The Korean Institute of Navigation 1996년도 춘계학술발표회 논문집
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• pp.77-92
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• 1996

When an automatic course-keeping is concerned as is quite popular in modern navigation the closed-loop steering system consists of autopilot device power unit (or telemotor unit) steering gear magnetic or gyro compass and ship dynamics. The consideration of irregular disturbances to ship dyanmics and a few non-linear mechanisms involved in the system inevitably or artificially are known to be very important in properly evaluating or analyzing the automatic steering system. In the present study the mathematical model of each element of an automatic steering system is derived which takes account of a fex non-linear mechanisms. PD(Proportional-Derivative) controller and low-pass filter with a weather adjustment are adopted to modelling the characteristics of an autopilot. The calculation method of imposing irregular disturbances to ship dynamics is proposed where irregular disturbances implying irregular wave and the fluctuating component of wind. For he evaluation of automatic steering system of ships in the open seas an important term "performance index" is introduced from the viewpoint of energy saving which derived from the concept of energy loss on ship propulsion. Finally the present methods are applied to two typical types of ship ; an ore carrier and a fishing boat. The various effects of linear and/or non-linear control constants of autopilot on propulsive energy loss are investigated to validate and clarify the present smulation technique.

• 한국항해항만학회지
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• 제39권2호
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• pp.89-97
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• 2015

The rising spate of piracy in Nigeria's territorial waters has become a burden on the economic development of the country. It has adversely affected the exportation of crude oil, which is the mainstay of the country's economy. Pirates target and hijack vessels carrying oil and gas, thus reducing the revenue accruable to the country from selling these resources. Piracy also affects the fishing industry which is another source of revenue to the country. Nigeria, as an import dependent country, relies on the importation of finished goods, and this is seriously affected by piracy. This study briefly examines the root causes of piracy in Nigeria. Further, the study interrogates the effects of piracy, identifies the challenges in the suppression of the crime and proffers suggestions toward suppressing the crime in the country. Against this backdrop, the study argues, among other things, that an expansive definition of piracy is key in the fight against this maritime crime in Nigeria, because the present legal regime is restrictive and limited in scope, thus, it does not reflect the modern piratical acts. More importantly, Nigeria must criminalise piracy in its domestic law in other to police its territorial waters, capture and prosecute pirates in its local courts.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2006년 창립20주년기념 정기학술대회 및 국제워크샵
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• pp.477-480
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• 2006

본 논문에서는 한국 동해 강구항 전면해역에서 계절풍이 탁월한 3월과 태풍 우쿵(WUKONG) 내습시 8월에 수압식 파고계를 이용하여 파랑관측을 실시하였다. 관측파랑자료의 해석을 통해 관측시점에서의 계절풍 및 대풍내습시의 기상현황과 파랑과의 상호관련성, 발생파랑의 통계적 특성을 분석하였다. 그 결과에 따르면 관측기간동안 강구항 전면해역에서는 직립방파제 설계식의 관계식 $H_{max}\;=\;1.8H_S$를 초과하는 고파랑이 태풍 내습시 발생하며, 계절풍이 발달한 시기에는 약 3m 파고의 파랑이 발생하였다.

• 한국항만학회지
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• 제15권1호
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• pp.57-74
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• 2001

In the past, the predictions of beach processes and harbor sedimentation were mainly relied on the hydraulic model tests and empirical methods. In recent years, however, as computers have come into wide use, more accurate models have gradually been developed and thus replaced those conventional methods. For prediction of topographical change near the coastal area, we need informations of wave and current conditions in the numerical model which should be calculated in advance. Numerical model introduced in this study combines wave refraction-diffraction, breaking, bottom friction, lateral mixing, and critical shear stress and three sub-models for simulating waves, currents, and bottom change were briefly discussed. Simulations of beach processes and harbor sedimentation were also described at the coast neighboring Bangpo Harbor, Anmyundo, Chungnam, where the area has suffered accumulation of drifting sand in a small fishing harbor with a wide tidal range. We also made model test for the new layout of the harbor and planned south breakwater for preventing intrusion of sand. Although the model study gave reasonable description of beach processes and harbor sedimentation mechanism, it is necessary to collect lots of field observation data, including waves, tides and bottom materials, etc. for better prediction.

• 한국항만경제학회지
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• 제19권1호
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• pp.89-112
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• 2003

In this article, 1'd like to analyse the principal distinctions between the duty of disclosure and warranty which are based on the same legal principles, utmost good faith(uberrima fides). Although the duty of disclosure and warranty have a same legal principle to protect insurance contract, they have several difference in appliance actually. Through these comparative analysis, 1 want to reveal the character of warranty which is unfamiliar to us under our commercial law. Warranty has some peculiarity, these are (a)A warranty does not have to be material to the risk, (b)A warranty must be exactly complied with, (c)It is impossible to defence for a breach of warranty, the breach of warranty is irremediable, and A casual connection between breach and loss needs not be shone, (d)A breach of a warranty may be waived by insurer. Sometimes in Korea like those stringent principles of warranty make Korean's small fishing or shipping company suffer from difficult because of insistence of discharge from liability by insurer. So I expect that all of them acknowledge the character of warranty and can make them protect their insurance money by themselves.

• 한국항만학회지
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• 제7권1호
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• pp.89-114
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• 1993

ICLL 66 is the most widely ratified instrument of the IMO and is, along with the International Convention on Safety of life at Sea (SOLAS), the primary document setting forth internationally agreed ship safety standards. ICLL 66 set freeboard requirement based on experience gained from the first Load Line Convention in 1930 and on contemporary developments in ship design. Reexamination of ICLL 66 is indicated by the proliferation of novel ship designs for which it lacks adequate regulations and by significant advancements in analytical seakeeping and deck wetness prediction techniques now available to the designer. In this paper, the Freeboard Advisory Group reviews these issues against the changing climate of the marine industry and maritime administrations, discusses the state of the art in analytical seakeeping programs, and outlines a series of recommendations for the establishment of a new international load line convention for the next century. The steps needs for an international program at IMO are discussed and a new convention is proposed.

• 한국항해항만학회지
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• 제32권10호
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• pp.765-770
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• 2008

본 논문은 하이브리드 전기 추진 시스템의 전력 제어에 관한 연구를 수행하였다. 하이브리드 전기 추진 시스템은 기본적으로 발전기와 축전지 전원을 이용하여 선박을 추진하는 시스템이다. 하이브리드 추진 시스템은 공급되는 전력을 최소화하기 위한 제어 알고리즘으로 동작한다. 본 논문에서는 하이브리드 전기 추진 시스템의 효율을 증가시키기 위한 축전지 충전 알고리즘을 제안한다. 실험을 통하여 제어 알고리즘이 하이브리드 전기 추진 시스템에서 정상적으로 동작하는 것을 알 수 있었다.

• 한국항만경제학회:학술대회논문집
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• 한국항만경제학회 2003년도 정기학술대회지
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• pp.271-294
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• 2003

In this article, 1'd like to analyse the principal distinctions between the duty of disclosure and warranty which are based on the same legal principles, utmost good faith(uberrima fides). Although the duty of disclosure and warranty have a same legal principle to protect insurance contract, they have several difference in appliance actually. Through these comparative analysis, I want to reveal the character of warranty which is unfamiliar to us under our commercial law. Warranty has some peculiarity, these are (a)A warranty does not have to be material to the risk, (b)A warranty must be exactly complied with, (c)It is impossible to defence for a breach of warranty, the breach of warranty is irremediable, and A casual connection between breach and loss needs not be shone, (d)A breach of a warranty may be waived by insurer. Sometimes in Korea like those stringent principles of warranty make Korean's small fishing or shipping company suffer from difficult because of insistence of discharge from liability by insurer. So I expect that all of them acknowledge the character of warranty and can make them protect their insurance money by themselves.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 추계학술대회
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• pp.114-115
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• 2023

국제해사기구(IMO)의 해운분야 환경규제 강화에 의해 친환경선박에 대한 연구가 활발히 진행되고 있다. 그러나 대형 선박에 대한 연구가 대부분이며 소형선에 대한 연구는 미흡한 실정이다. 대부분의 어민들이 소형선을 운항하기 때문에 이에 대한 친환경 연료 선박 연구가 필요하다. 본 연구는 하이브리드 전기추진선 개발을 위해 저항성능 해석 및 모형시험, POW Test를 수행하였으며, CFD와 모형시험 결과 비교검증하였다.